diff options
Diffstat (limited to 'src/filo/fs/vfs.c')
| -rw-r--r-- | src/filo/fs/vfs.c | 193 |
1 files changed, 0 insertions, 193 deletions
diff --git a/src/filo/fs/vfs.c b/src/filo/fs/vfs.c deleted file mode 100644 index 9131bf210..000000000 --- a/src/filo/fs/vfs.c +++ /dev/null @@ -1,193 +0,0 @@ -/* Interface between GRUB's fs drivers and application code */ -#include <lib.h> - -#include "filesys.h" -#include <fs.h> - -#define DEBUG_THIS DEBUG_VFS -#include <debug.h> - -int filepos; -int filemax; -grub_error_t errnum; -void (*disk_read_hook) (int, int, int); -void (*disk_read_func) (int, int, int); -char FSYS_BUF[FSYS_BUFLEN]; -int fsmax; - -struct fsys_entry { - char *name; - int (*mount_func) (void); - int (*read_func) (char *buf, int len); - int (*dir_func) (char *dirname); - void (*close_func) (void); - int (*embed_func) (int *start_sector, int needed_sectors); -}; - -struct fsys_entry fsys_table[] = { -# ifdef FSYS_FAT - {"fat", fat_mount, fat_read, fat_dir, 0, 0}, -# endif -# ifdef FSYS_EXT2FS - {"ext2fs", ext2fs_mount, ext2fs_read, ext2fs_dir, 0, 0}, -# endif -# ifdef FSYS_MINIX - {"minix", minix_mount, minix_read, minix_dir, 0, 0}, -# endif -# ifdef FSYS_REISERFS - {"reiserfs", reiserfs_mount, reiserfs_read, reiserfs_dir, 0, - reiserfs_embed}, -# endif -# ifdef FSYS_JFS - {"jfs", jfs_mount, jfs_read, jfs_dir, 0, jfs_embed}, -# endif -# ifdef FSYS_XFS - {"xfs", xfs_mount, xfs_read, xfs_dir, 0, 0}, -# endif -# ifdef FSYS_ISO9660 - {"iso9660", iso9660_mount, iso9660_read, iso9660_dir, 0, 0}, -# endif -}; - -/* NULLFS is used to read images from raw device */ -static int nullfs_dir(char *name) -{ - uint64_t dev_size; - - if (name) { - debug("can't have a named file\n"); - return 0; - } - - dev_size = (uint64_t) part_length << 9; - /* GRUB code doesn't like 2GB or bigger files */ - if (dev_size > 0x7fffffff) - dev_size = 0x7fffffff; - filemax = dev_size; - return 1; -} - -static int nullfs_read(char *buf, int len) -{ - if (devread(filepos>>9, filepos&0x1ff, len, buf)) { - filepos += len; - return len; - } else - return 0; -} - -static struct fsys_entry nullfs = - {"nullfs", 0, nullfs_read, nullfs_dir, 0, 0}; - -static struct fsys_entry *fsys; - -int mount_fs(void) -{ - int i; - - for (i = 0; i < sizeof(fsys_table)/sizeof(fsys_table[0]); i++) { - if (fsys_table[i].mount_func()) { - fsys = &fsys_table[i]; - printf("Mounted %s\n", fsys->name); - return 1; - } - } - fsys = 0; - printf("Unknown filesystem type\n"); - return 0; -} - -int file_open(const char *filename) -{ - - char dev[32]; -// char *dev=0; - const char *path; - int len; - int retval = 0; - int reopen; - - path = strchr(filename, ':'); - if (path) { - len = path - filename; - path++; - //dev = malloc(len + 1); - memcpy(dev, filename, len); - dev[len] = '\0'; - } else { - /* No colon is given. Is this device or filename? */ - if (filename[0] == '/') { - /* Anything starts with '/' must be a filename */ - // dev = 0; - dev[0]=0; - - path = filename; - } else { - memcpy(dev, filename, 32); -// dev = strdup(filename); - path = 0; - } - } - debug("dev=%s, path=%s\n", dev, path); - - if (dev && dev[0]) { - if (!devopen(dev, &reopen)) { - fsys = 0; - goto out; - } - if (!reopen) - fsys = 0; - } - - if (path) { - if (!fsys || fsys==&nullfs) { - if (!mount_fs()) - goto out; - } - using_devsize = 0; - if (!path[0]) { - printf("No filename is given\n"); - goto out; - } - } else - fsys = &nullfs; - - filepos = 0; - errnum = 0; - if (!fsys->dir_func((char *) path)) { - printf("errnum=%d\n",errnum); -// printf("File not found\n"); - goto out; - } - retval = 1; -out: -// if (dev) -// free(dev); - return retval; -} - -int file_read(void *buf, unsigned long len) -{ - if (filepos < 0 || filepos > filemax) - filepos = filemax; - if (len < 0 || len > filemax-filepos) - len = filemax - filepos; - errnum = 0; - return fsys->read_func(buf, len); -} - -int file_seek(unsigned long offset) -{ - filepos = offset; - return filepos; -} - -unsigned long file_size(void) -{ - return filemax; -} - -void file_close(void) -{ -} - |